linux-cve-announce - CVE-2024-53188: wifi: ath12k: fix crash when unbinding

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Message-ID: <2024122722-CVE-2024-53188-be4e@gregkh>
Date: Fri, 27 Dec 2024 14:52:34 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53188: wifi: ath12k: fix crash when unbinding

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: fix crash when unbinding

If there is an error during some initialization related to firmware,
the function ath12k_dp_cc_cleanup is called to release resources.
However this is released again when the device is unbinded (ath12k_pci),
and we get:
BUG: kernel NULL pointer dereference, address: 0000000000000020
at RIP: 0010:ath12k_dp_cc_cleanup.part.0+0xb6/0x500 [ath12k]
Call Trace:
ath12k_dp_cc_cleanup
ath12k_dp_free
ath12k_core_deinit
ath12k_pci_remove
...

The issue is always reproducible from a VM because the MSI addressing
initialization is failing.

In order to fix the issue, just set to NULL the released structure in
ath12k_dp_cc_cleanup at the end.

The Linux kernel CVE team has assigned CVE-2024-53188 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.6.64 with commit 81da9c0854545c3188ca2a09afe7cb65f9c012b5
	Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.11.11 with commit 2eec88c0fa63f8ad35704a8c9df0b5bd8694fcda
	Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.12.2 with commit 488d2959c28621e52b3cce118a813a4bc18bb3d1
	Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.13-rc1 with commit 1304446f67863385dc4c914b6e0194f6664ee764

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2024-53188
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/net/wireless/ath/ath12k/dp.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/81da9c0854545c3188ca2a09afe7cb65f9c012b5
	https://git.kernel.org/stable/c/2eec88c0fa63f8ad35704a8c9df0b5bd8694fcda
	https://git.kernel.org/stable/c/488d2959c28621e52b3cce118a813a4bc18bb3d1
	https://git.kernel.org/stable/c/1304446f67863385dc4c914b6e0194f6664ee764